Padlock



*(Model.)

R. J. MYERS.- PADLOGK.

No. 468,113. Patented Peb. 2,1892.

llllllillllmf 9 liO UNITED -STATns PATENT OFFICE.

REUBEN J. MYERS, OF MOUNT JOY, PENNSYLVANIA.

PADLOCK.

SPECIFICATION forming part of Letters Patent No. 468,113, dated February2, 1892.

Application iiled July 28, 1891. Serial No. 400,925. (Model.)

To Cif/ZZ whom t 11i/ty concern:

Be it known that I, REUBEN J. MYERS, a citizen of the United States,residing at Mount Joy, in the county of Lancaster and State ofPennsylvania, have invented certain new and useful Improvements inPadlocks, of which the following is a specification.

My present invention relates, in general, to that class of padlockswhich are provided with a shackle hinged at one extremity to the housingwith means for automatically throwing the free extremity of the shackleout of the housing when the shot-bolt of the lock is shifted by the key,and with suitable devices for automatically locking the free extremityof the shackle when the same is inserted into the housing; and itrelates more particularly to certain improvements in the constructionand mode of operation, of the means for automatically throwing the freeextremity of the shackle ont of the housing, and to the arrangement andconstruction of the devices for automatically locking the free extremityof the shackle in closed position.

The principal objects of my present invention are, first, to provide asafe, eiiicient, durable, and comparatively inexpensive padlock; second,to reduce the number and simplify the construction of the working partsof such a lock, and, third, to construct and arrange the shot-bolt andlocking-tumbler in such manner that the shot-bolt cannot become detachedfrom the shackle by any concussion or blow on the exterior of the lock.

My invention consists of a padlock provided with a hinged shackle, asliding shot-bolt provided with a recess or notch and adapted to engagethe free extremity of the shackle, a 3

rotatable key for actuating the shot-bolt, and a spring-actuated slidingtumbler adapted to normally engage and detain the shot-bolt andinterposed in range of the key, the construction being such that thetumbler is shifted into line with the recess or notch and releases thebolt when the key is rotated.

My invention further consists in the im? in connection with theaccompanying drawings, forming part hereof, and in which- Figure l is atransverse section of a lock embodying features of my invention, showingd the spring-actuated sliding tumbler shifted i by the rotation of thekey, and Fig. 4 isa section on the line 4. 4 of Fig. 1, showing ashotbolt provided with a recess, and a spring-actuated sliding tumbleradapted to normally vengage said shot-bolt, but susceptible of be-v ingshifted by the rotation of the key into "alignment with the recess topermit of the actuation of the shot-holt.

In the drawings, a is a two-part housing `whereof one part a is providedwith pins a2,

c3, and a", and the other part with orifices a, engaging said pins. Oneextremity of a shackle b works in a recess a6, formed inthe housing a,and is pivotally connected with the pin a4. The free extremity of thisshackle b is adapted to enter an orifice ci in the housing a..

as is a circular orifice provided with side wise projecting slots andformed in the housing a, in order to permit of the insertion of a l datkey c.

d and d are ribs cast or otherwise formed upon the interior side Wallsof the housing a s and serving, together with the side walls of 'thehousing, to constitute ways d2 and di, in which the traveler e andshotbolt f work.

o, are bridge-pieces which, together with the circular portion of theorifice as, forni bearings for the trunnions of aperforated i collar g.i

am are bearings cast or otherwise formed upon the interior of .thehousing a and adapted for the reception of the pointed extremity of thekey c.

a are slotted ways projecting from the interior of the part ct of thehousing ct and adapted for the reception of trunnions h', connected withthe tumblen 71,.

,slot b2, formed in the free extremity of the shackle l). The centerportion of the shotbolt f is cut away so as to form a cavity f2;

Fig. 4, for the reception of the tumbler 7L and the key c.

f4 is a lug projecting from one of the side walls of the cavity fzintorange of the key c, so that the rotation of the latter tends to shiftthe shot-bolt f out of engagement with the free extremity of the shackleb.

f3 is arecess formed in the side Wall of the cavity f2 and adapted toreceive the tumbler 7L when the latter is depressed by the rotation ofthe key c, so that the bolt f is released and may be shifted out ofengagement with the shackle, it being understood that when the bolt isin engagement with the shackle the spring h2 causes the tumbler 7L to beshifted into engagement with the side wall of the cavl ity f2, thuspreventing the bolt from being shifted by a jar or concussion on theexterior of the lock. The spring h2 may of. course be retained inposition in a number of different ways. However, excellent results havebeen attained in practice by supporting` one extremity of the spring ina recess in the tumbler and the other extremity upon a stud orprojection au, projecting from the part ct of the housing, as shown inFig. 3. rlhe traveler e is provided with a lip e for closing theshackle-aperture a7 and serves, first, to throw the shackle h out of thelock,land, second, to engage With the shot-bolt after the shackle isOpened in order to retain the former in open position, as shown in Fig.2.

s is a spring mounted upon the pin a3 and having one extremity s thereofin engagement with the shot-bolt and the other extremity s2 thereof inengagement With the traveler e, so as to cause the traveler e to beshifted normally into position for closing the shackle-aperture a7, andso as to cause the shot-bolt f to be shifted into engagement with theshackle b, it being understood, however, that the traveler normallydet-ains the shot-bolt in open position, Fig. 2, until the freeextremity of the shackle contacts with and depresses the traveler',whereupon the shot-bolt is released and enters the slot b2 in theshackleb. j

When the shackle b is in a closed position, as shown in Fig. l, theshot-boltf is in engagement with the slot b2 of the shackle and thetraveler e is held in a depressed position by the extremity of theshackle. Moreover, the shot-boltf is positively held by the tumbler h,as shown in Fig. 4.

ln order to open the lock, a fiat key c is inserted through the apertureas and rotatable collar g, past the tumbler h and through the cavity f2of the shot-bolt f until the pointed extremity of the key engages thebearlng d10, whereupon the key is rotated in the direction indicated bythe arrow in Fig. 2, with v the result that one edge of the key shiftsthe tumbler h through the ways a and, against the force of the springh2, out of engagement with the side wall of the cavity f2 and intoalignment with the recess f3, so that the shotbolt f is released. At thesame time the other edge of the key shifts the shot-bolt jagainst theforce of the spring s', out of engagement with the shackle Z). As soonas the shackle is released and before a complete revolution of the keyis made the traveler e throws the shackle out of the housing a., andduring the completion of the remaining portion of the revolution of thekey the traveler e engages the extremity of the shotbolt f and retainsthe same in open position, as shown in Fig. 2.

In order to relock the padlock, the shackle Z) is pushed into thehousing a, and this motion of the shackle depresses the traveler e, andthus releases the shot-bolt f, which is automatically shifted by thespring s into engagement With the shackle, and this motion of theshot-bolt permits the spring h2 to shift the tumbler h in the ways allso as to engage the interior side Wall of the cavity f2, with the resultthat the shot-bolt is locked to place.

The key c cannot be inserted into the lock unless it is fitted to enterthe oblong slot ag in the housing a, the oblong slot in the rotatablecollar g, and the space between the tumbler 7L and Web @12. Moreover,the key c cannot be rotated unless it is provided With notches c in therespective edges thereof, adapted for the reception of the bearings ofthe collar g, and With similar notches c2, adapted for the reception ofa rib h3 upon the tumbler 71 and semicircular projection or projectionsals upon the web al?, so that in manufacturing the hereinabove describedlocks in large quantities it is possible lto change the position, size,or number of the ribs upon the tumbler 7L and to provide keys withcorresponding notches in the edges thereof. ln such case each key Willonly open the lock to which it is especially itted, because if it wereattempted to open a lock with a key that did not have notches adapted toaccommodate the ribs on the tumbler the key would force the tumbler intocontact with the projection a or with the part a of the housing, wherebythe further rotation of the key would be prevented, and thus it would4be impossible to shift the shot-bolt out of engagement with theshackle.

Having thus described the nature and objects of my present invention,what Iclaim as new, and desire to secure by Letters Patent,

1. Apadlock provided withahinged shackle, a sliding shot-bolt providedwith a recess and IOS adapted to engage the free extremity of theshackle, a spring for shifting said lbolt into engagement with theshackle, a rotatable key for shifting the shotbolt out ot' engagementwith the shackle, and a spring-actuated sliding tumbler adapted tonormally engage the shotbolt and interposed in range ot' the key, theconstruction being such that the tumbler is shifted into line with therecess and releases the bolt when the key is rotated, substantially asand for the purposes set forth.

E2. ln a padlock, a shot-bolt having a cavity for the reception of arotatable key, aprojection for engaging the key, and a recess, and aspring-actuated tumbler working in Ways and adapted to normally engagethe side wall ot' said cavity and to be shifted into alignment with therecess, substantially as and for the purposes set forth.

3. A padlock provided with a two part housing united by pins, a shacklehinged to said housing, atraveler for throwing open the shackle andclosing the shackle-aperture, a sliding shot-bolt forengaging theshackle, and a spring mounted on one of said pins and having oneextremity in engagement with the shot-bolt and the other extremity inengagement with the traveler, substantially as and for the purposes setforth.

l. A padlock provided with a recessed shotbolt, and a spring-actuatedtumbler having a ribbed face adapted to engage a correspondingly-notchedk ey, theconstructionbeing such that the rotation of the key shifts thetumbler into line with the recess of the shot-bolt and permits ot' theactuation of the shotbolt,sub stantially as and for the purposes setforth.

5. A padlock provided with a housing, a recessed shot-bolt, waysconnected with one side wall of'said housing, a spring-actuated tumblerhaving trunnions Working in said ways, and a web connected. with theother side of said housing and engaging said tumbler and recessed forthe insertion of a key, substantially as and for the purposes set forth.i

G. A-padlock provided with ahousing having an aperture, a shot-bolt, abridge-piece, a perforated rotatable collar supported by said apertureand bridge-piece, a tumbler working in suitable ways.and provided With aribbed surface, a web, bearings, and a key provided with notchescorresponding with said web and ribbed surface, substantially as and forthe purposes set forth.

In witness whereof I have hereunto set my signature in the presence ot'two witnesses.

REUBEN J. MYERS. Witnesses:

A. B. SToUGHroN, THOMAS M. SMITH.

